Apparatus for enlarging and reducing objects



Aug. 24 1926. 1,597,598

F. A. JONES APPARATUS FOR ENLARGING AND REDUCING O BJECTS Filed August 29, 1924 2 Sheets-Sheet l FZZJJA. Jazwa' I INVENTOR I I In BY W WITNESS: ATTORNEY Aug. 24 1926. 1,597,598

F. A. JONES APPARATUS FOR ENLARGING AND REDUCING OBJECTS Filed August 29, 1924 2 s s t 2 I 1mm mm! 4 W Z INVENTOR ATTORNEY Patented Aug. 24, 1926.

UNITED STATES FABIS ALFRED JONES, OF NEW ORLEANS, LOUISIANA.

APPARATUS FOR ENTIARGING AND REDUCING OBJECTS.

\ Application filed August 29, 1924. Serial no. 735,006.

This invention relates to improvements in apparatus for enlarging and reducing objects fordrawing purposes.

The principal object of the invent on is a the provision of an apparatus wherein the image of the object to be drawn is reflected upon a transparent surface where the same may be traced, and whereby the image may either be enlarged or reduced as the occasion it) demands.

Another object'of the invention is to provide an apparatus which includes an object supporting panel, and a lens supporting panel, and a means for adjusting either 15 panel with respect to the other, and means for adjusting the lens with respect to the panel adjusting means.

A further object of the invention resides in the construction of an apparatus of the 20 class mentioned which is simple in construction, cheap of manufacture and easy of adj ustment.-

With these and other objects in view, the

invention resides in certain novel construe-- 26 tion and combination and arrangement of parts, the essential features of which are hereinafter fully described, are particularly ointed out in the appended claims, and are illustrated in the accompanying drawing, in

30 which 1-- Figure 1 is a perspective view of my invention with one of the doors removed.

Figure 2 is a longitudinal sectional view on the line 2-2 of Figure 1.

Figure 3 is a vertical transverse section view on the line 3-3 of Figure 1.

Figure 1 is a detail perspective view of the lens adjusting mechanism.

Figure 5 is a vertical sectional view on the 4 line 5-5 of Figure 4.

Figure 6 is a detail perspective view of the manner of securing a sheet of drawing aper over the surface upon which the object is reflected.

Figure 7 is a perspective view of a modified form of my invention.

Referring more particularly to the drawing, the reference numeral 10 designates my invention in its entirety, and which includes 50 a casing 11 in which access may be had from one side through doors 12 hingedly connected to the end walls. The casing is rectangular in configuration and has slidably mounted therein an object supporting panel W 13 and a lens supporting panel 14:, each panel having separate adjusting means 15 and 16 respectively. a

The front end wall of the casing has mounted therein a transparent window 17 which is countersunk within the front wall to be flat with the outer surface of the same.

The panel 13 as before mentioned is slidable in the casing and supports a shelf 18 which is vertically adjustableby a means 19. The shelf 18 is adapted to support the object to be enlarged or reduced, and in the present instance there is which is positioned on the shelf centrally thereof and which is held to the panel 13 by a wire B which encircles the bottle and is secured to the panel to prevent the accidental shifting of the bottleduring the tilting of the casing as will be hereinafter explained.

The longitudinal adjusting means 15 of the panel 13 comprises a screw rod 20 which has its bearings in the end walls of the casing and which freely passes through the panel 14, but which co-acts with a threaded opening 21 in the panel 13. One end of the rod 20 passes through the front end wall of the casing and is formed with a square'surface for receiving a crank handle for imparting rotary movement to the rod. It will be seen that by turning the rod, the panel may be moved in either direction, dependingupon the focus desired.

shown a bottle A The panel 14 supports a series of electric light bulbs 22 on the rear face and reflectors 23 serve to throw the light from the bulbs onto the object as shown in Figure 2 of the drawing. A switch 23' is mounted on the exterior of the casin for controlling the operation of the lig ts. A ventilator 24 is mounted in the top of the casing between the panels and permits the escape of heat caused by the electric light bulbs.

The panel 1 1 1s formed centrally with an opening 25, in which is mounted a lens mounting 26. The mounting 26 comprises sections 27 and 28 which are threadedly connected together for rotary adjustment. The section 28 carries a lens 29 for transmitting or retracting the light upon. the transparent window 17, and the said section has keyed thereon, a pulley wheel 30 for'a purpose to be described. 7 The adjusting means. 16 is similar'to the adjusting means .15 and comprises a screw threaded rod 31 likewise mounted in the V threaded accomplished Which in turn opposite end walls and beneath the rod 20.

his rod has co-acting engagement with 2,-

opening 32 in the panel 14, but extends freely through the panel 13. front end of the rod 20 projects beyond the front end of the casing and receives a crank handle 33 for imparting rotary movement thereto. The handle is removable and is adapted for use in rotating the rod 20.

In order to limit movement of the panels panel 14 with inwardly extending stop hers co-act with too close to each other.

Ialso provide an adjusting means 35 for adjusting the focus of the lens with relation to the initial longitudinal adjustment of the panel 14, andthe said means comprises a shaft 36 which is journalled in the top of the end walls of the casing and is provided with a crank handle 37 for imparting rotary movement thereto. The shaft is formed with a horizontal slot 38 for a. portion of its length.

sleeve member 39 is slidable on the shaft 30 but turns with the same as the member is formed with a pin or rib which the key way slot 38. The member is provided wi 39 for limiting the movement of the member in either direction and between the flanges 39', the exterior of the member is provided with screw threads 40 for co-ac- I h 41 mounted 61 tion with a threaded bearing in the panel. From the description thus far, it will be seen that th member 39 will sired to further adjust the lens for clearly refracting or transmitting the image of the f object on the transparent window. This is by turning the handles 37 rotate with the shaft 36 which imparts rotary movement to the sec tion 28 of the lens mounting to move the section 28 with respect to the section 27. Simultaneously with the-adjustment of the section 28, the sleeve member will move in. a similar direction by reason of the threaded connection in the panel 14 so as to always For adjusting the angularity of the easfor supporting the same, I provide a pair of stop flanges th the front end wall of the casin may be dis posed at the through. With reference to Figure 6, it

will be seen that the image of the object may be traced upon the drawing paper and the size of the image may operation of the and 35. p

In Figure 7 I have shown a slightly modified form of device 47 wherein the desk or transparent window is left ofl and also the lens adjusting means, as the lens is exposed and may be adjusted in the usual manner. In this form, the image is adapted to cast a reflection upon a screen disposed forwardly of the lens. The device 47 is mounted upon a stand '48, and is both vertically and angularly adjusted by a means 49.

While I have described what I adjusting means 15, 16

be varied without in any way de-. parting from the spirit of my invention, and to the exact at is claimed as new is In a device of the class described, the 'nation of a casing having a transparent window in pair of spaced panels, means for adjusting said panels longitudinally within said casing independently of each other, object supporting means carried by one of said anels, a lens structure threadedly mounte upon the other of said panels, an ad'usting means file independently of said panel adjusting means, said means including a shaft joursaid shaft and slida le thereover, said sleeve lens structure for imparting a turning movement to'the lens structure upon rotation of said shaft.

2. n apparatus for enlarging and reducing objects comprising a casing having a end wall thereof, for adjustably supporting said casing, a pair of panels slidable in said casing, separate adjusting means for mov ing said panels with respect to each other,

be varied by the a sleeve rotatable with object supporting means carried b one of said panels, a lens mounted on t e front face of the other of said panels, illuminating means carried by the other face of said panel for illuminating the object adapted to be supported by said object supporting means, whereby said lens is adapted to refract the image of the object through said transparent panel, and a sheet of paper arranged over said transparent panel for receiving the image.

3. An apparatus for enlarging and reducing objects comprising a casing having a transparent panel mounted on the end Wall thereof, means for adjustably supporting said casing, a pair of panels slidable in said casing, separate adjusting means for moving said panels with respect to each other,

object supporting means carried by one of said panels, means for verticall adjusting said object supporting means, a lens mounted on the front face of the other of said panels, means for adjusting said lens with respect to its supporting panel, illuminating means carried by the other face of said panel for illuminatin the object adapted to be supported .by sa1d object supporting means, whereby said lens is adapted to retract the image of transprent panel, and a sheet of paper arranged over said transparent panel for receiving the image.

In testimony whereof I have aflixed my signature.

FARIS ALFRED JONES.

the object through said 

